CN203009835U - Shaft-end sealing device of air pre-heater - Google Patents
Shaft-end sealing device of air pre-heater Download PDFInfo
- Publication number
- CN203009835U CN203009835U CN2012206810189U CN201220681018U CN203009835U CN 203009835 U CN203009835 U CN 203009835U CN 2012206810189 U CN2012206810189 U CN 2012206810189U CN 201220681018 U CN201220681018 U CN 201220681018U CN 203009835 U CN203009835 U CN 203009835U
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- ring
- sealing body
- shaft
- wall
- heater
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Abstract
The utility model discloses a shaft-end sealing device of an air pre-heater. The shaft-end sealing device of the air pre-heater comprises a sealing chamber installed on a shaft outer wall, the sealing chamber is formed by a left sealing body and a right sealing body in an assembled mode, the sections of the left sealing body and the right sealing body are H-shaped, and the left sealing body and the right sealing body respectively comprise an upper semicircular ring, a lower semicircular ring and a semicircular cylinder between the upper semicircular ring and the lower semicircular ring. A sealing cavity is formed among the left sealing body, the right sealing body and the shaft outer wall, and cold air inlet holes and hot air outlet holes are respectively formed in the symmetrical positions of the semicircular cylinders of the left sealing body and the right sealing body. An end cover is installed on the shaft outer wall at the upper end of the sealing chamber in a sleeved mode, and an elastic sealing body and a junk ring are sequentially installed on the shaft outer wall at the lower end of the sealing chamber in a sleeved mode. The shaft-end sealing device of the air pre-heater further comprises a threaded rod penetrating through the upper semicircular rings, the lower semicircular rings and the junk ring, the upper end of the threaded rod is fixed on the end cover, and locking nuts are respectively matched with the portions, below the lower semicircular rings and the junk ring, of the threaded rod in a screwed mode. The shaft-end sealing device of the air pre-heater is reasonable in structure, and capable of effectively eliminating the phenomena of ash leak and air leak at shaft ends of the air pre-heater, optimizing the production field environment, improving working efficiency of the air pre-heater, reducing energy consumption and prolonging service life.
Description
Technical field:
The utility model relates to the shaft sealing technical field, relates in particular to a kind of shaft end seal device of air preheater.
Background technique:
Rotary regenerative air preheater is the important thermal energy exchange equipment of thermal power generation unit, and traditional air preheater shaft end seal mainly adopts dual mode: a kind of is the alumiseal device; Another kind of is that material filling type seals.
The alumiseal device is two blocks of semicircular aluminium sheets, and the circular hole suitable with the air preheater bearing outside diameter is processed at the center, by pressing plate, two blocks of semicircle aluminium sheets are fixed on axle head, and the chucking macro-axis, thus make aluminium sheet and the large between centers sealing effect that reaches very close to each other.In actual the use, due to the rotation of macro-axis, aluminium sheet produces wearing and tearing with large between centers, and the gap is increasing, causes leaking ash, leaking out.
Material filling type sealing mainly is pressed in space between main shaft and bearing case by the graphite packing, to reach sealing effect, but because this class material does not have elasticity, can make macro-axis surface generation wearing and tearing with the friction of large between centers, thereby produce the gap, not only damage macro-axis, and leak ash, leak out, pollute site environment, increased amount of maintenance and energy consumption, reduced service life of equipment.
To sum up state, this two classes sealing means all can not be realized the bearing seal effect of air preheater, the axle that is mainly air preheater passes bearing, the ambient temperature at its end cap position directly seals axle head 350 ℃ of left and right, still there is no the elastic sealed body of 350 ℃ of high temperature of ability at present, even if load onto by force, the elastic sealed body aging rate is quite fast, and working life is short, and repair and replacement are very frequent.
The model utility content:
In order to make up the prior art problem, the purpose of this utility model is to provide a kind of shaft end seal device of air preheater, effectively eliminates the phenomenon that the air preheater axle head leaks ash, leaks out, optimize production on-site environment, improve the working efficiency of air preheater, reduce energy consumption, increase the service life.
The technical solution of the utility model is as follows:
the shaft end seal device of air preheater, it is characterized in that: comprise the closed chamber that is installed on the axle outer wall, closed chamber is the left side of work shape by the cross section, right seal assembling consists of, left, right seal includes first annulus, second annulus and be connected to first annulus, semicircular cylinder between second annulus consists of, left, form Seal cage between right seal and axle outer wall, left, the semicircular cylinder symmetrical position of right seal has the cold wind inlet hole and the hot blast that are communicated with Seal cage and portals, be set with end cap on the axle outer wall of described closed chamber upper end, be set with successively elastic sealed body on the axle outer wall of closed chamber lower end, pressure ring, also include screw rod, screw rod runs through the upper semi-ring of closed chamber, lower semi-ring and pressure ring, the screw rod upper end is fixed on end cap, the below that is positioned at described lower semi-ring and pressure ring on screw rod is combined with respectively locking nut.
The shaft end seal device of described air preheater is characterized in that: described elastic sealed body inner ring is conical ring elasticity lip, conical ring elasticity lip and the interlock of axle outer wall.
The utility model has the advantages that:
The utility model is rational in infrastructure, and is easy to prepare, can effectively eliminate the phenomenon that the air preheater axle head leaks ash, leaks out, and optimizes production on-site environment, improves the working efficiency of air preheater, reduces energy consumption, increases the service life.
Description of drawings:
Fig. 1 is structural representation of the present utility model.
Embodiment:
Referring to Fig. 1:
the shaft end seal device of air preheater, comprise the closed chamber that is installed on the axle outer wall, closed chamber is the left side of work shape by the cross section, right seal 1, 2 assemblings consist of, left, right seal 1, 2 include first annulus 1-1, second annulus 1-2 and be connected to first annulus 1-1, semicircular cylinder 1-3 between second annulus 1-2 consists of, left, right seal 1, 2 and the axle outer wall between form Seal cage 3, left, right seal 1, the symmetrical position of 2 semicircular cylinder 1-3 has the cold wind inlet hole 4 and the hot blast that are communicated with Seal cage and portals 5, be set with end cap 6 on the axle outer wall of closed chamber upper end, be set with successively elastic sealed body 7 on the axle outer wall of closed chamber lower end, pressure ring 8, also include screw rod 9, screw rod 9 runs through the upper semi-ring 1-1 of closed chamber, lower semi-ring 1-2 and pressure ring 8, screw rod 9 upper ends are fixed on end cap 6, the below that is positioned at second ring 1-2 and pressure ring 8 on screw rod 9 is combined with respectively locking nut 10.
Elastic sealed body 7 inner rings are conical ring elasticity lip 7-1, conical ring elasticity lip 7-1 and the interlock of axle outer wall.
The utility model in use, utilize locking nut 10 to compress between closed chamber and end cap 6, a wind (cold wind) is introduced the cold wind inlet hole 4 of a side, at the interior formation circulating air flow of Seal cage 3, due to conduction of heat, can reduce the temperature of axle outer wall, then hot blast portals from hot blast and draws 5; So just elastic sealed body 7 can be installed under closed chamber, the installation position of elastic sealed body 7 lowers the temperature through the closed chamber section, has guaranteed the working life of elastic sealed body 7.
The cold wind blast is greater than air preheater hot blast blast, and namely cold wind inlet hole 4 blast are greater than the hot blast 5 end blast that portal, and cold wind inlet hole 4 is connected in the import of air preheater cold wind, and the hot blast 5 use pipelines that portal connect and press on air preheater hot blast position.
Good sealing effect of the present utility model can be eliminated the phenomenon that the air preheater axle head leaks ash, leaks out effectively, optimizes production on-site environment.
Claims (2)
1. the shaft end seal device of an air preheater, it is characterized in that: comprise the closed chamber that is installed on the axle outer wall, closed chamber is the left side of work shape by the cross section, right seal assembling consists of, left, right seal includes first annulus, second annulus and be connected to first annulus, semicircular cylinder between second annulus consists of, left, form Seal cage between right seal and axle outer wall, left, the semicircular cylinder symmetrical position of right seal has the cold wind inlet hole and the hot blast that are communicated with Seal cage and portals, be set with end cap on the axle outer wall of described closed chamber upper end, be set with successively elastic sealed body on the axle outer wall of closed chamber lower end, pressure ring, also include screw rod, screw rod runs through the upper semi-ring of closed chamber, lower semi-ring and pressure ring, the screw rod upper end is fixed on end cap, the below that is positioned at described lower semi-ring and pressure ring on screw rod is combined with respectively locking nut.
2. the shaft end seal device of air preheater according to claim 1, it is characterized in that: described elastic sealed body inner ring is conical ring elasticity lip, conical ring elasticity lip and the interlock of axle outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206810189U CN203009835U (en) | 2012-12-11 | 2012-12-11 | Shaft-end sealing device of air pre-heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206810189U CN203009835U (en) | 2012-12-11 | 2012-12-11 | Shaft-end sealing device of air pre-heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203009835U true CN203009835U (en) | 2013-06-19 |
Family
ID=48601432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206810189U Withdrawn - After Issue CN203009835U (en) | 2012-12-11 | 2012-12-11 | Shaft-end sealing device of air pre-heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203009835U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016740A (en) * | 2012-12-11 | 2013-04-03 | 马鞍山市荣亿密封材料有限责任公司 | Shaft-end seal device of air preheater |
-
2012
- 2012-12-11 CN CN2012206810189U patent/CN203009835U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016740A (en) * | 2012-12-11 | 2013-04-03 | 马鞍山市荣亿密封材料有限责任公司 | Shaft-end seal device of air preheater |
| CN103016740B (en) * | 2012-12-11 | 2015-03-25 | 马鞍山市荣亿密封材料有限责任公司 | Shaft-end seal device of air preheater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130619 Effective date of abandoning: 20150325 |
|
| RGAV | Abandon patent right to avoid regrant |